Glassfish example source code file (WLContainerDescriptorNode.java)

This example Glassfish source code file (WLContainerDescriptorNode.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

classloader, classloader, default, dom, environmentproperty, initializationparameter, initializationparameter, node, object, runtimeexception, string, string, webbundledescriptor, webbundledescriptor, webcomponentdescriptor

The Glassfish WLContainerDescriptorNode.java source code

/*
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 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
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 * Version 2] license."  If you don't indicate a single choice of license, a
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package com.sun.enterprise.deployment.node.runtime.web;

import com.sun.enterprise.deployment.EnvironmentProperty;
import com.sun.enterprise.deployment.WebBundleDescriptor;
import com.sun.enterprise.deployment.WebComponentDescriptor;
import com.sun.enterprise.deployment.web.InitializationParameter;
import com.sun.enterprise.deployment.node.XMLElement;
import com.sun.enterprise.deployment.node.runtime.RuntimeDescriptorNode;
import com.sun.enterprise.deployment.runtime.web.ClassLoader;
import com.sun.enterprise.deployment.xml.RuntimeTagNames;

import org.glassfish.deployment.common.DeploymentProperties;

import org.w3c.dom.Element;
import org.w3c.dom.Node;

/**
 * This node is responsible for handling weblogic.xml container-descriptor.
 *
 * @author  Shing Wai Chan
 */
public class WLContainerDescriptorNode extends RuntimeDescriptorNode {
    /**
     * receives notification of the value for a particular tag
     * 
     * @param element the xml element
     * @param value it's associated value
     */
    public void setElementValue(XMLElement element, String value) {
        String name = element.getQName();
        if (name.equals(RuntimeTagNames.INDEX_DIRECTORY_ENALBED)) {
            setDefaultServletInitParam("listings", value);
        } else if (name.equals(RuntimeTagNames.INDEX_DIRECTORY_SORT_BY)) {
            setDefaultServletInitParam("sortedBy", value);
        } else if (name.equals(RuntimeTagNames.SAVE_SESSIONS_ENABLED)) {
            WebBundleDescriptor descriptor = (WebBundleDescriptor)getParentNode().getDescriptor();
            descriptor.setKeepState(value);
        } else if (name.equals(RuntimeTagNames.PREFER_WEB_INF_CLASSES)) {
            WebBundleDescriptor descriptor = (WebBundleDescriptor)getParentNode().getDescriptor();
            ClassLoader clBean = descriptor.getSunDescriptor().getClassLoader();
            if (clBean == null) {
                clBean = new ClassLoader();
                descriptor.getSunDescriptor().setClassLoader(clBean);
            }
            clBean.setAttributeValue(ClassLoader.DELEGATE,
                    Boolean.toString(!Boolean.parseBoolean(value)));
        } else {
            super.setElementValue(element, value);
        }
    }

    /**
     * @return the descriptor instance to associate with this XMLNode
     */    
    public Object getDescriptor() {
        return null;
    }

    public Node writeDescriptor(Element root, WebBundleDescriptor webBundleDescriptor) {
        Node containerDescriptorNode = null;
        WebComponentDescriptor defaultServletDesc =
                webBundleDescriptor.getWebComponentByCanonicalName("default");
        InitializationParameter listingsParam = getDefaultServletInitParam(
                defaultServletDesc, "listings", false);
        InitializationParameter sortedByParam = getDefaultServletInitParam(
                defaultServletDesc, "sortedBy", false);
        ClassLoader clBean = webBundleDescriptor.getSunDescriptor().getClassLoader();

        containerDescriptorNode = appendChild(root, RuntimeTagNames.CONTAINER_DESCRIPTOR);

        if (listingsParam != null) {
            appendTextChild(containerDescriptorNode,
                    RuntimeTagNames.INDEX_DIRECTORY_ENALBED, listingsParam.getValue());
        }
        
        if (sortedByParam != null) {
            appendTextChild(containerDescriptorNode,
                    RuntimeTagNames.INDEX_DIRECTORY_SORT_BY, sortedByParam.getValue());
        }

        appendTextChild(containerDescriptorNode, RuntimeTagNames.SAVE_SESSIONS_ENABLED,
                Boolean.toString(webBundleDescriptor.getKeepState()));

        if (clBean != null) {
            appendTextChild(containerDescriptorNode,
                    RuntimeTagNames.PREFER_WEB_INF_CLASSES,
                    clBean.getAttributeValue(ClassLoader.DELEGATE));
        }

        return containerDescriptorNode;
    }


    private void setDefaultServletInitParam(String name, String value) {
        WebBundleDescriptor descriptor = (WebBundleDescriptor)getParentNode().getDescriptor();
        WebComponentDescriptor defaultServletDesc =
                descriptor.getWebComponentByCanonicalName("default");
        InitializationParameter initParam =
                getDefaultServletInitParam(defaultServletDesc, name, true);
        initParam.setValue(value);
    }

    private InitializationParameter getDefaultServletInitParam(
            WebComponentDescriptor defaultServletDesc, String name, boolean create) {
        if (defaultServletDesc == null) {
            throw new RuntimeException("Default servlet is missing in web descriptors.");
        }
        InitializationParameter initParam = defaultServletDesc.getInitializationParameterByName(name);
        if (initParam == null && create) {
            initParam = new EnvironmentProperty();
            defaultServletDesc.addInitializationParameter(initParam);
            initParam.setName(name);
        }
        return initParam;
    }
}